Signatures of Electronic Nematic Phase at Isotropic-Nematic Phase Transition

The electronic nematic phase occurs when the point-group symmetry of the lattice structure is
broken, due to electron-electron interactions. We study a model for the nematic phase on a square
lattice with emphasis on the phase transition between isotropic and nematic phases within mean
field theory. We find the transition to be first order, with dramatic changes in the Fermi surface
topology accompanying the transition. Furthermore, we study the conductivity tensor and Hall
constant as probes of the nematic phase and its transition. The relevance of our findings to Hall
resistivity experiments in the high-Tc cuprates is discussed.

Hae-Young Kee1, Eugene H. Kim1,2, and Chung-Hou Chung1
1 Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7
2 Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1